Eta Orionis

Starbox begin
name=Eta Orionis Starbox observe
epoch=J2000
constell=Orion
ra=05h 24m 28.6s (may be inaccurate)
dec=−02° 23' 49.7" (May be inaccurate)
appmag_v=3.38 Starbox character
class=B0.5V
b-v=−0.17
u-b=1.22
variable= Beta Lyrae variableStarbox astrometry experimental asymmetric
radial_v=19.8
prop_mo_ra=−0.54
prop_mo_dec=−3.21
parallax=3.62
p_error=0.88
absmag_v=−3.8Starbox catalog
names=η Ori, 28 Ori, HD 35411, HR 1788, BD−02°1235, HIP 25281, and SAO 132071Starbox reference
Simbad=HR+1788

Eta Orionis (η Ori / η Orionis) is a star in the constellation Orion. It is also known as one of "Saiph" [Allen, R. H. (1899) ', G. E. Stechert, New York, p.316.
"Saiph" was also used to indicate Kappa Orionis in the same constellation.] , "Algjebbah" [Moore, P. (1983) "The Guinness Book of Astronomy: Facts and Feats", (2nd ed.), Guiness Superlatives Limited, Middlesex, p.230.] , or "Ensis""' (Latin for "sword", since the star is taken to represent Orion's sheathed weapon).

It is a star system at a distance of 900 light years from Earth and part of the Orion Arm. Eta Orionis lies a little to the west of Orion's belt between Delta Orionis and Rigel, being closer to Delta Orionis than to Rigel.It is an eclipsing binary system consisting of two blue stars orbiting one another in a regular pattern.

See also

* Orion's Sword

Notes